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Hi Experts,
Good day.
I have a question about chip: UCC24612.
I want to use this with a DC voltage of 400 Can we use a resistor divider?
I want to use it in the LLC converter, but the secondary voltage is 400V so if we use an SR driver. so if we use an SR driver.
It seems the voltage is out of the range, so we want to know if we use a resistor divider to half the dc voltage, can the SR driver still work correctly?
My worry is that since the chip is negative voltage sensing, so if we use a resistor divider, I'm afraid that the sensing will not work. The mosfet we choose has a 0.95 VSD.
Another question is that, if I want to use it in a full bridge circuit, should I add an additional bootstrap circuit? Or just use the chip as a signal generator, and use another half-bridge driver to drive the bridge arm?
Please advise.
Regards,
Josel
Hello,
The voltage range is greater than the device is recommended to be used. However, it may be possible to extend the voltage range. The following link will bring you to an application note that discusses how to extend the voltage range of this device.
https://www.ti.com/lit/an/slua860/slua860.pdf
Please note that if you use this approach you need to ensure the absolute maximum voltage of any pin is not exceeded.
Regards,